As soon as the apartment door opens, You aim the revolver and fire. However, instead of your roommate entering the door, it's your girlfriend, May! You shot her directly in the left breast, and she doubles over in pain. You watch her from a distance, as you are paralyzed in horror.
May's boobs starts to retract, with no evidence of blood anywhere. Her crotch area grows in size, as her ass flattens. The hourglass shape turns into straight sides, and May's form seems to grow. May has become a man. He looks down at his new form, and stares in shock. You then walk over.
"What happened to me?" May mumbles, unsure of what to do. You explain what happened, and he looks down once more. "Oh... wow," May continues in awe. You look at the bullets and grab the pink one. You figure that if blue is male, then pink is female. But who do you shoot? Yourself or May? The first seems like a good choice, as May is looking pretty good.